TL37-M 1/2" NPT Thread Ag Quick Connect Hydraulic Poppet style Coupler 1/2" body size for Tractor Bobcat Skid Steer Loaders Implements (Pack of 2)


These couplers are a direct replacement for the standard sized coupler mounted on many models of skid steers and attachments.


These are NOT light duty couplers. The sturdy design of heavy duty TopLine couplers have become well known for their durability and ability to withstand rugged conditions.


Our coupler sizes fit many models of: Bobcat, John Deere, CAT, Kubota, New Holland, CASE, JCB, Thomas, Gehl, Volvo, and ASV skid steers.  


Ag Style couplers are designed for applications where hydraulic spillage is a concern. One of the great advantages to the Flush Face design is that the couplers are easy to keep clean which helps to prevent contaminants from entering the hydraulic system during connection and disconnection.


Couples to any standard 1/2" body Ag style couplers on Skid Steers and other equipment. These couplers meet or exceed the ISO 5675 standard.





  • Heavy Duty design. Rated at over 3600 PSI
  • Couples to any standard 1/2” Ag style coupler
  • Push-connect locking sleeve design
  • Exceeds ISO 5675 standards
  • Corrosion-resistant zinc plating
  • No air inclusion during disconnection
  • Heavy knurled sleeves for non-slip grip
  • Flat Face coupler design minimizes hydraulic fluid loss



  • Model number:                   TL37-M
  • Coupler Body Size:            1/2"
  • Coupler Thread Size:         1/2" NPT
  • Thread Inner Diameter:      0.77”
  • Thread Dash Number:       -08
  • Coupler Material Type:       Steel
  • Coupler Plating Type:         Corrosion-resistant trivalent zinc


This set includes:

  • 2 Male Ag Style Coupler


Interchangeable Part Numbers



Parker/Pioneer 4000 Series

4050-4 female and 8010-4 male

Faster NV/NS Series

Safeway S-20 Series

Stucchi IR Series

Snap-Tite 60/ 21

Dixon AG Series

Aeroquip FD42

ISO 5675 Series

ISO 7241 Series

TopLine AG-1212-1P



(Click below to see what couplers fit your machine)


Thread Sizes for 1/2" Body Agricultural Style Adapters:

5/8” SAE (ORB) Female Thread (Set) TL32

1/2” NPT Female Thread (Set) TL37

1/2” NPT Female Thread (Set) TL38 – Ball Style

1/2” NPT Female Thread (Set) TL39


Flat Face to Agricultural Style Adapters:

Flat Face to Male Ag Couplers TL46

Flat Face to Male & Female Ag Coupler TL36


See our Store for more coupler sizes

We aim to be your #1 source for high quality skid steer & ag hydraulic quick connect couplers and accessories.


This item has a 100% satisfaction guarantee!


Return Policy: If you are not fully satisfied with your purchase, you may return unused item for a full refund of the purchase price, excluding shipping charges, within 60 days of purchase date.

If you have any questions about this item, feel free to contact us 

 Check back often for more skid steer products and solutions.


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